Mental health status of employees in substations of electromagnetic fields at extremely low frequency in Tehran.
Published in: Iranian J Environ Health Sci Eng 2006; 3 (3): 217-221
Aim of study (acc. to author)
The participants were asked to fill in a questionnaire
Check-List-90-Revised) to assess the mental health
status. The questionnaire
consists of 90-item questions including somatization, obsession and compulsion, interpersonal sensitivity
, hostility, phobic anxiety
, paranoid ideation, and psychoticism. Score rating based on a 5-point scale evaluates the individual mental
status during the last week. Scoring and interpretation of results are achieved according to three indices: Global Severity Index (GSI), Positive Symptom
Distress Index (PSDI), and Positive Symptom
Total (PST). GSI shows the level or severity of disorder and gives information about the number of symptoms
and severity of distress. PSD
simply measures the number of symptoms
that are reported positive by the examinee. PSDI is pure measurement of distress severity.
Endpoint/type of risk estimation
Reference group 1
employees of power stations working in the administration without exposure to electromagnetic fields
employees of power stations exposed to electromagnetic fields
≥ 18 years
- employees of power stations working in the administration without exposure to electromagnetic fields
- employment conditions, income rate, education, work hours
- case:control = 1:1
Conclusion (acc. to author)
Yamazaki S et al.
Association between high voltage overhead transmission lines and mental health: A cross-sectional study.
Beale IL et al.
Psychological effects of chronic exposure to 50 Hz magnetic fields in humans living near extra-high-voltage transmission lines.